Can't set IP address on AC800M ABB controller using IP Config Tool
Having the exact issue discussed in this forum:
Firmware installs just fine.
You should ask your regional ABB support center for assistance.
I'm not so skilled on the AC 800M and I've searched for the error but haven't found anything matching.
I'd try to store another address, e.g. the first of the recommended controller IP addresses: 172.16.80.151/255.255.252.0
If that works, the IP address you try is no good, or the tool does not permit it.
If the above address is not accepted, I'd guess the controller or firmware is at fault. Try disconnecting all batteries (internal, SB821/822), fry another firmware version and try setting the above address again.
If that does not work, my guess is that the hardware is broken in some way.
But take this with a grain o salt, I've never come across this error before.